@inproceedings{2d5e17c3a2a24929a09eb55ca85999ec,
title = "Origin of superior activity of Ru@Pt core-shell nanoparticles towards hydrogen oxidation in alkaline media",
abstract = "There is an ongoing discussion about the nature of the high hydrogen oxidation reaction (HOR) activity of bimetallic Pt-Ru catalysts in alkaline media. We provide an insight on the HOR mechanism for this type of catalyst, excluding bifunctionality as the main driving force for the oxidation of hydrogen. In order to do so, we prepared and evaluated Ru@Pt core-shell nanoparticles with sub-, mono- and multilayered Pt-shells. Rotating disk electrode (RDE) studies in 0.1 M NaOH solution of all prepared catalysts, including Pt/C as a reference show that Ru particles fully encapsulated with a Pt-shell show significantly higher activity than Ru particles that are solely covered with Pt-submonolayers. Furthermore, we found a 4-fold enhancement of Ru@Pt vs. pure Pt with respect to the surface normalized HOR activity. The Ru@Pt catalysts were characterized by COads-stripping voltammetry, as well as cyclic voltammetry (CV) in order to identify the Pt-coverage and shell thickness.",
author = "Schw{\"a}mmlein, {J. N.} and El-Sayed, {H. A.} and St{\"u}hmeier, {B. M.} and K. Wagenbauer and H. Dietz and Gasteiger, {H. A.}",
note = "Publisher Copyright: {\textcopyright} 2016 The Electrochemical Society.; Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting ; Conference date: 02-10-2016 Through 07-10-2016",
year = "2016",
doi = "10.1149/07514.0971ecst",
language = "English",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "14",
pages = "971--982",
editor = "Jones, {D. J.} and H. Uchida and Gasteiger, {H. A.} and K. Swider-Lyons and Buchi, {F. N.} and Pintauro, {P. N.} and Pivovar, {B. S.} and Ayers, {K. E.} and Perry, {K. A.} and P. Shirvanian and Weber, {A. Z.} and Ramani, {V. K.} and P. Strasser and Mantz, {R. A.} and K. Shinohara and S. Mitsushima and C. Coutanceau and Fenton, {J. M.} and Schmidt, {T. J.} and Fuller, {T. F.} and Narayanan, {S. R.} and Kim, {Y. T.} and L. Zhuang and Sun, {S. G.}",
booktitle = "Polymer Electrolyte Fuel Cells 16, PEFC 16",
edition = "14",
}